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1 3/4 USS Flat Washers (ASME B18. 22.1)

USS Flat Washers were among the first known commercial flat washers in the U.S.A. They are characterized as having a loose fit, and have a larger outside diameter than SAE Flat washers. The USS designation was derived from the name “Unified Standard Series.” At the time, coarse threaded bolts were called USS bolts.

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
AbabaCAUSS Flat WasherSteelPlain1 3/41 3/4 uss f/w stl pln (4 od) b18.22.13
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AbabaCAUSS Flat WasherSteelZinc/Clear1 3/41 3/4 uss f/w stl znc (4 od) b18.22.197
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AbabaCAUSS Flat WasherSteelZinc/Clear1 3/41 3/4 uss f/w stl znc (4 od) b18.22.125
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B & K FASTPAUSS Flat WasherSteelGalvanized1 3/41 3/4 uss flat washers galv b18.22.14
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B & K FASTPAUSS Flat WasherSteelPlain1 3/41 3/4 uss flat washers plain b18.22.1217
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WurthOntUSS Flat WasherSteelZinc/Yellow1 3/4wsh flt uss a w st (zy) 1 3/4 b18.22.175
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THRDFASTFLUSS Flat WasherSteelZinc/Clear1 3/4USS f/w b18.22.1184
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